package com.example.controller;

import com.example.pojo.Result;
import com.example.pojo.User;
import com.example.service.UserService;
import com.example.util.JwtUtil;
import com.example.util.ThreadLocalUtil;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;
import java.util.HashMap;
import java.util.Map;

@RestController
@RequestMapping("/user")

public class UserController{
    @Autowired

    private UserService userservice;
    @PostMapping("/register")
    public Result register(String username, String password){
       User u= userservice.findbyusername(username);
       if(u==null){
           userservice.register(username,password);
           return Result.success();

       }else{
           return Result.error("用户名已经被占用");
       }
    }
    @PostMapping("/login")
    public Result<String> login(String username,String password) {
        //根据用户名查询用户

        User loginUser = userservice.findbyusername(username);
        //判断该用户是否存在
        if (loginUser == null) {
            return Result.error("用户名错误");
        }

        //判断密码是否正确  loginUser对象中的password是密文
        if (password.equals(loginUser.getPassword())){
            //登录成功
            Map<String, Object> claims = new HashMap<>();
            claims.put("id", loginUser.getId());
            claims.put("username", loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }
    @GetMapping("/userInfo")
    public Result<User> userInfo(@RequestHeader(name = "Authorization") String token) {
        //根据用户名查询用户
       Map<String, Object> map = JwtUtil.parseToken(token);
        String username = (String) map.get("username");
        User user = userservice.findbyusername(username);
        return Result.success(user);
    }
    @PutMapping("/update")
    public Result update(@RequestBody User user) {
        userservice.update(user);
        return Result.success();
    }
    @PatchMapping("updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl) {
        userservice.updateAvatar(avatarUrl);
        return Result.success();
    }
    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String, String> params,@RequestHeader("Authorization") String token) {
        //1.校验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");

        if (!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)) {
            return Result.error("缺少必要的参数");
        }

        //原密码是否正确
        //调用userService根据用户名拿到原密码,再和old_pwd比对
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User loginUser = userservice.findbyusername(username);
        if (!loginUser.getPassword().equals(oldPwd)){
            return Result.error("原密码填写不正确");
        }

        //newPwd和rePwd是否一样
        if (!rePwd.equals(newPwd)){
            return Result.error("两次填写的新密码不一样");
        }

        //2.调用service完成密码更新
        userservice.updatePwd(newPwd);
        return Result.success();
    }
}
